1. Micropropulsion and Nanotechnology Laboratory, The George Washington University, Washington, DC 20052, USA
2. Department of Thermal Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People’s Republic of China
3. School of Medicine, Johns Hopkins University,
Baltimore, Maryland 21218, USA
4. Jerome Canady Research Institute for Advanced Biological and Technological Sciences, Takoma Park, Maryland 20912,
USA